Google's a really big sandbox to be digging through if you're looking for only the most legitimate material for a research paper. SweetSearch ranks up primary sources and credible sites, like universities and public repositories, for students looking to narrow their search.

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SweetSearch came about as the byproduct of making findingDulcinea, an aggregator that terms itself the "Librarian of the Internet." It's a database of about 35,000 web sites vetted by researchers, librarians, and teachers, with priority given to spots like the Library of Congress, Smithsonian, and other public and academic sources. It sweeps away the pseudo-science, forums, and sites that read like paraphrased summaries.